函數(shù)的值域(首先要挖掘隱含的定義域)
函數(shù)的奇偶性(首先定義域必須關(guān)于原點(diǎn)對(duì)稱)
函數(shù)的單調(diào)性(注：①先確定定義域;②單調(diào)性證明一定要用定義)
函數(shù)的圖象
反函數(shù)、冪函數(shù)、指數(shù)函數(shù)、對(duì)數(shù)函數(shù)
